US2908677A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Nickel and cobalt complexes of pyrazolone monoazo compounds
Assignee: Eastman Kodak Co
•
Filing: 1955-03-30
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Granted: 1959-10-13
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Expires: 1975-03-30
Abstract
No abstract record available.
Inventors
- 👤 James M Straley
- 👤 John G Fisher
- 👤 David J Wallace
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 12:19
CPC Classifications
C; C08; C08F; C08F291/00; Y; Y10; Y10S; Y10S8/00; Y10S8/92; Y10S8/921; Y10S8/927
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
13 words
THE METALLIZED AZO COMPOUNDS OBTAINED BY HEATING A MONOAZO COMPOUND HAVING THE FORMULA:
Claim 2
Dependent Claim
13 words
THE METALLIZED AZO COMPOUNDS OBTAINED BY HEATING A MONOAZO COMPOUND HAVING THE FORMULA:
References Cited (Backward Citations)
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US2150180A
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US2565898A
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US2599147A
Cited
BE513360A
Cited
US2727031A
Cited
US2767166A
Cited
US2756223A
Cited
US2730521A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-10-12 | 1963-04-13 | 1963-10-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-10-12 | 1967-04-13 | 1967-10-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-10-12 | 1971-04-13 | 1971-10-13 | $7700.00 | Window Closed / Lapsed |